摘要:
Concerns lithium-doped diamond: Low-resistivity n-type semiconductor diamond doped with lithium and nitrogen, and a method of manufacturing such diamond are provided. Low-resistivity n-type semiconductor diamond containing 1017 cm−3 or more of lithium atoms and nitrogen atoms together, in which are respectively doped lithium atoms into carbon-atom interstitial lattice sites, and nitrogen atoms into carbon-atom substitutional sites, with the lithium and the nitrogen holding arrangements that neighbor each other. To obtain low-resistivity n-type semiconductor diamond, in a method for the vapor synthesis of diamond, photodissociating source materials by photoexcitation utilizing vacuum ultraviolet light and irradiating a lithium source material with an excimer laser to scatter and supply lithium atoms enables the diamond to be produced.
摘要:
An electron emission element according to the present invention comprises a substrate, and a plurality of protrusions composed of diamond and protruding from the substrate. Each protrusion includes a columnar portion, the side face of which forms an inclination of approximately 90° relative to the surface of the substrate, and a tip portion, which is located on the columnar portion having a spicular end. A conductive layer is formed on the upper part of each columnar portion, and a cathode electrode film, which is electrically connected to the conductive layer, is formed on the side face of the columnar portion.
摘要:
The method of making a diamond product in accordance with the present invention comprises the steps of forming a diamond substrate (50) with a mask layer (52), and etching the diamond substrate (50) formed with the mask layer (52) with a plasma of a mixed gas composed of a gas containing an oxygen atom and a gas containing a fluorine atom, whereas the fluorine atom concentration is within the range of 0.04% to 6% with respect to the total number of atoms in the mixed gas.
摘要:
An apparatus forms a diamond film from a microwave plasma by controlling a manufacturing condition based on a spectroscopic measurement of the plasma light emission to obtain a large area of a high-quality diamond film. Using the apparatus, a gas mixture of hydrocarbon gas and hydrogen gas is introduced into a reactor, where the gas mixture is excited by microwave energy which is also introduced into the reactor to generate a plasma, and the light emitted from the plasma is spectroscopically measured using a spectroscope. Furthermore, a formation condition of the diamond film is controlled such that the spectrum of a carbon molecule (C2) falls within a predetermined range of requirement. A carbon molecule vibration temperature is determined from the spectrum, and the formation condition, such as the microwave input power, the reactor pressure, or the gas flow rate, is controlled so that the determined vibration temperature falls within a specified range, especially 2000 to 2800 K.
摘要翻译:一种装置通过基于等离子体发光的光谱测量控制制造条件从微波等离子体形成金刚石膜,以获得大面积的高品质金刚石膜。 使用该装置,将烃气体和氢气的气体混合物引入反应器中,其中气体混合物由也被引入反应器中的微波能量激发以产生等离子体,并且从光谱测量从等离子体发射的光 使用分光镜。 此外,控制金刚石膜的形成条件使得碳分子(C2)的光谱落在预定的要求范围内。 从光谱确定碳分子振动温度,控制微波输入功率,反应器压力或气体流量等的形成条件,使得所确定的振动温度落在规定范围内,特别是2000〜 2800 K.
摘要:
A diamond film is deposited in the thickness of 20 &mgr;m on a silicon wafer 0.8 mm thick by filament CVD. Here the hydrogen content of the diamond film is adjusted in the range of not less than 1% nor more than 5% in atomic percent. By mechanical polishing with a grinding wheel including diamond abrasives, the diamond film is smoothed so that the arithmetic mean roughness (Ra) of the surface thereof becomes not more than 20 nm.
摘要:
A semiconductor mounting package includes at least one diamond member having a first surface on which at least one semiconductor chip is mounted and a second surface opposite the first surface, and a high thermal conductivity metal member adhered to the second surface of the diamond member.
摘要:
A method for synthesizing diamond by chemical vapor deposition (CVD) is described. The method produces diamond of high purity and high crystallizability having various uses at low cost and at high speed. In a first method, a mixture of oxygen gas and a carbon-containing compound gas, and optionally an inert gas, is introduced into a reaction vessel. In a second method, a mixture containing at least one of fluorine gas, chlorine gas, a nitrogen oxide gas, sulfur dioxide, an aforementioned mixture of oxygen gas and a carbon-containing compound gas, or a mixture thereof with an inert gas is introduced into the reaction vessel. A plasma is generated by use of an electromagnetic field, thereby producing diamond on a base material placed in the vessel.
摘要:
A thin film single crystal substrate useful in the production of a semiconductor, comprising a base substrate made of single crystal diamond and at least one thin film of a single crystal of a material selected from the group consisting of silicon carbide, silicon, boron nitride, gallium nitride, indium nitride, aluminum nitride, boron phosphide, cadmium selenide, germanium, gallium arsenide, gallium phosphide, indium phosphide, gallium antimonide, indium arsenide, indium antimonide, aluminum phosphide, aluminum arsenide, aluminum antimonide, cadmium telluride, mercury sulfide, zinc oxide, zinc sulfide, zinc selenide and zinc telluride, and optionally an intermediate layer between the base substrate and the thin film of single crystal, which optionally comprises an intermediate layer between the base substrate and the thin film of single crystal.
摘要:
An X-ray window having a diamond X-ray transparent film, diamond reinforcing crosspieces and a substrate on which the diamond X-ray transparent film has been grown. As reinforcing crosspieces are made of diamond, no thermal stress is generated between the X-ray transparent film and the crosspieces. This mask excels in flatness, transmittance of X-rays, and strength.
摘要:
A bonding tool for TAB, used in the production of semiconductor chips, which is provided with, at the end thereof, a substrate consisting of a member selected from the group consisting of sintered compacts of Si or Si.sub.3 N.sub.4 as a predominant component, sintered compacts of SiC as a predominant component, sintered compacts of AlN as a predominant component and composite compacts thereof, the substrate being coated with polycrystalline diamond deposited by gaseous phase synthesis method.